Home / 78,920.15-108,908.01-43,110.32

Finding the Fourth Proportional to 78,920.15, 108,908.01 and 43,110.32

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Solution

The fourth proportional to 78,920.15, 108,908.01 and 43,110.32 is: 59,491.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,920.15 : 108,908.01 = 43,110.32 : x
  2. Step 2: Convert to fraction form
    78,920.15/108,908.01 = 43,110.32/x
  3. Step 3: Cross multiply
    78,920.15x = 108,908.01 × 43,110.32
  4. Step 4: Simplify right side
    78,920.15x = 4,695,058,617.12
  5. Step 5: Solve for x
    x = 4,695,058,617.12/78,920.15
  6. Step 6: Final answer
    x = 59,491.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.